<template>
  <div>
    <!--TODO 拖动功能未做-->
    <el-button type="danger" size="mini" @click="batchDelete" round>批量删除</el-button>
    <el-tree :data="list" :props="defaultProps"
             @node-click="handleNodeClick"
             :expand-on-click-node="false"
             :default-expanded-keys="expandedKey"
             show-checkbox
             node-key="catId"
             ref="tree">
      <span class="custom-tree-node" slot-scope="{ node, data }">
        <span>{{ node.label }}</span>
        <span>
          <el-button v-if="node.level <= 2"
            type="text"
            size="mini"
            @click="() => append(data)">
            Append
          </el-button>
          <el-button type="text" size="mini" @click="edit(data)">edit</el-button>
          <el-button v-if="node.childNodes.length === 0"
            type="text"
            size="mini"
            @click="() => remove(node, data)">
            Delete
          </el-button>
        </span>
      </span>
    </el-tree>

    <el-dialog
      :title="title"
      :visible.sync="dialogVisible"
      width="30%"
      close-on-press-escape=true>
      <el-form :model="category">
        <el-form-item label="分类名称">
          <el-input v-model="category.name" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="图标">
          <el-input v-model="category.icon" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="计量单位">
          <el-input v-model="category.productUnit" autocomplete="off"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="dialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="submitData()">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
    name: "category",
    data(){
      return{
        list: [],  //树形结构的数据
        expandedKey: [], //删除节点原地展开
        dialogVisible: false,
        category:{name:'',icon:null,productUnit:null}, //新增分类表单对象
        dialogType: '', //弹框类型
        title: '',
        defaultProps: {
          children: 'children',
          label: 'name'
        }
      }
    },
    created() {
      this.getMenus()
    },
    methods: {
      getMenus() {
        this.$http({
          url: this.$http.adornUrl('/product/category/list/tree'),
          method: 'get',
        }).then(res=>{
          this.list = res.data.entities
        })
      },
      append(data) {
        console.log("data1",data)
        this.dialogType = "add";
        this.dialogVisible = true
        this.title = "添加分类"
        this.category.parentCid = data.catId;
        this.category.catLevel = data.catLevel * 1 + 1;
        this.category.catId = null;
        this.category.name = "";
        this.category.icon = "";
        this.category.productUnit = "";
        this.category.sort = 0;
        this.category.showStatus = 1;
      },
      edit(data) {
        console.log("data2",data)
        this.title = "编辑分类"
        this.dialogType = "edit";
        this.dialogVisible = true

        this.category.name = data.name;
        this.category.catId = data.catId;
        this.category.icon = data.icon;
        this.category.productUnit = data.productUnit;
        this.category.parentCid = data.parentCid;
        this.category.catLevel = data.catLevel;
        this.category.sort = data.sort;
        this.category.showStatus = data.showStatus;
      },
      submitData() {
        if (this.dialogType == "add") {
          this.addCategory();
        }
        if (this.dialogType == "edit") {
          this.editCategory();
        }
      },
      //添加三级分类
      addCategory() {
        console.log("提交的三级分类数据", this.category);
        this.$http({
          url: this.$http.adornUrl("/product/category/save"),
          method: "post",
          data: this.$http.adornData(this.category, false)
        }).then((res) => {
          this.$message({
            message: "菜单保存成功",
            type: "success"
          });
          //关闭对话框
          this.dialogVisible = false;
          //刷新出新的菜单
          this.getMenus();
          //设置需要默认展开的菜单
          this.expandedKey = [this.category.parentCid];
        });
      },
      editCategory() {
        var { catId, name, icon, productUnit } = this.category;
        this.$http({
          url: this.$http.adornUrl("/product/category/update"),
          method: "post",
          data: this.$http.adornData({ catId, name, icon, productUnit }, false)
        }).then(({ data }) => {
          this.$message({
            message: "菜单修改成功",
            type: "success"
          });
          //关闭对话框
          this.dialogVisible = false;
          //刷新出新的菜单
          this.getMenus();
          //设置需要默认展开的菜单
          this.expandedKey = [this.category.parentCid];
        });
      },
      remove(node, data) {
        console.log("node",node)
        console.log("data2",data)
        var ids = [data.catId];
        this.$confirm(`是否删除【${data.name}】菜单?`, "提示", {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning"
        })
          .then(() => {
            this.$http({
              url: this.$http.adornUrl("/product/category/delete"),
              method: "post",
              data: this.$http.adornData(ids, false)
            }).then((res) => {
              this.$message({
                message: "菜单删除成功",
                type: "success"
              });
              //刷新出新的菜单
              this.getMenus();
              //设置需要默认展开的菜单
              this.expandedKey = [node.parent.data.catId];
            });
          })
          .catch(() => {});
      },
      handleNodeClick() {

      },
      batchDelete() {
        let checkNodes = this.$refs.tree.getCheckedKeys()  /*拿到被选中元素的id*/
        console.log("checkNodes",checkNodes)
        this.$confirm(`是否批量删除菜单?`, "提示", {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning"
        })
          .then(() => {
            this.$http({
              url: this.$http.adornUrl("/product/category/delete"),
              method: "post",
              data: this.$http.adornData(checkNodes, false)
            }).then(({ data }) => {
              this.$message({
                message: "菜单批量删除成功",
                type: "success"
              });
              this.getMenus();
            });
          })
          .catch(() => {});
      }
  }
}
</script>

<style scoped>

</style>
